Radio tube socket



April 10; 1928.

w. H. EGGERS RADIO TUBE SOCKET Filed June 5, 1925 v Elmowttoz VVi/hbm H. Eggs/1s.

Patented Apr. 10,- 1928.

UNITED STATES WILLIAM H. EGGERS, OF BROOKLYN, NEW YORK.

RADIO TUBE SOCKET.

Application filed June 5, 1925. Serial No. 35,211.

My invention relates to improvements in sockets such as are used for holding radio tubes in radio receiving apparatus. As generally arranged, these tubes which are rather expensive, support the internal elements, .to wit, the filament, grid, and plate, in such a way that it' often happens that some of the elements or their connections are disturbed or broken so as to ruin the working of the tube, and as the tubes a-re'expensive it is quite a serious matter. I am aware that attempts have been made to obviate this by cushioning the whole support which carries the set, but this does not accomplish the desired result. My invention is intended to produce a simple socket in which the body portion which receives the tube, is cushioned on its base in such a. manner as to afford practically a shock absorber against movement either toward or away fromthe base,

thereby rendering the socket a very safe support for its tube, and preventing likelihood of accidental disrupture of the tube elements or their connections. 1

My invention also is intended to provide terminals for the tube elements which are supported in such a way that they are not likely to be disarranged, have straight essentially radial lines, and are spaced from one another in such a manner as to afford the least possible loss by induction or the like. The invention is also intended to produce a structure which affords a safe and economical support for the tube and its elements, and which can be easily and economically made. All of which will be better under stood from the following description.

Reference is to be had to the accompanying drawings forming a part of this specification. in which similar reference characters indicate corresponding parts in all the views.

Figure 1 is a side elevation of the tube socket embodying my invention.

Figure 2 is a broken plan view thereof. Figure 3 is a side elevation of the body of the socket removed from its base. and

Figure 4 is an enlarged detail perspective of one of the terminals or contact arm. The socket is provided with a base 10 which is flat, and preferably though not necessarily rectangular, this being of insulating material, and having preferably perforated feet 11 to facilitate its attachment to a support. The base is adapted to yield ingly supportthe tubular body 12 and yet hold the same firmly and in positionto receive the conventional tube in the usual man her. In the drawings the tube is indicated by dotted lines. The body 12 is substantially as usual, having a bayonet slot 13 .to connect with the tube, but at the bottom it varies from the usual body in that it has laterally extending lugs or ears 1% which are regularly spaced around theoutside of the body, and which are preferably, though not necessarily, four in number. These ear-s14 are adapted to seat on a cushion 15 resting on the base 10, the cushion being preferably of rubber, and in the form of a washer, while above each ear is a second rubber cushion 16, and a fastening such as a screw bolt 17 extends through the base, both cushions, and each ear 14, as shown in Figure 1, and a nut .18 serves to fasten the parts together. Obvi= ously springs might be substituted for the parts 15 and 16, but they would not be nearly as ;suitable as soft sponge rubber. As the ears and connected parts are spaced-around the tubular body as shown, and the nuts 18 can be tightened to the necessary extent, just the desired amount of elasticity can behad and yet the connection will be firm.

The base 10 is provided with countersunk seats 20 which are spaced between the ears 14 and their connections, as shown in F igure 2. These seats are perforated as at 21 and receive the base flange 22 of a contact or terminal 23 which is preferably a flat connector, and extends substantially parallel with the base. The body portion 23 connects with the flange 22 as shown at 24, and the parts 23 and 22 are perforated as at 25 and 26 to receive the fastening binding screw 30, presently referred to.

The inner end of each terminal 23 is preferably bent at right angles as at 27, and formed into a socket 27 made by turning up the flanges 28, this being adapted to connect as usual with the elements of the tube which are not here shown as they form no part1 arranged between i Y such a way that there is littleflikelihood of.

their being disturbed, that they extend straight intovthe tubular body 12, and that support adapted by the radial arrangement shown they are as far from each other as possible. It will further be seen that-I provide a very firm yetcushioned Connection between the member 12 and the base 10, and that the cushion is double-acting, the down thrust being absorbed by the cushions 15 and the up thrust by the cushions 16. either of which can be made of suitablematerial and of desired thickness or resilience. Thus I have provided a very simple inexpensive tube socket ,which will receive the conventional tube and connect with its elements in the conventional manner, and which will afford a very safe to hold the tube securely.

I claim z- 1. A radio tube socket comprising a base having a plurality of substantially equidistantly countersunk seats, a tubular body provided with a plurality of cut-away portions on its lower edge corresponding to said countersunk seats, a terminal secured at one end in each of said seats and having the other end thereof overlapped and extending into the tubular body through the cnt-away portions therein, a plurality of outwardly eeaera extending ears on the tubular body near the lower edge thereof and adjacent said cutaway portions, means extending through said ear and base for connecting said tubular body and said base with the cut-away portions in alignment with the countersunk seats, and a cushioning element above and below each ear and retained by said connecting means.

2. A radio tube socket comprising a base, a tubular body serving as a tube socket, said body being disposed above the base and having symmetrically arranged external ears near the bottom, and with openings through the wall between the ears, cushions between the base and the ears and also above the ears, means extending through the cushions and ears and connecting with the base, said means serving also to tension the cushions on the ears, and flat spring contact arms supported on the base and extending through the openings in the tubular body, said arms being symmetrically spaced apart 'and having their inner ends bent laterally and provided with terminal sockets adapted to connect with tubeelements.

In testimony whereof, name to this specification 1925.

I have s-igned this'3 day ofJune,

WILLIAM H. scenes] i 

